v1.8.1: fixes dependencies and distribution name detection

Features (sort of):

• Skip prune on source failure #490
• support check-redfish 2.0 #478

Bugfixes:

• fixes unsupported operand type after netbox upgrade and netbox-sync update #456
• fixes Missing API-Version #446
• fixes wrong platform evaluation #448 #492 #495
• fixes dependency Conflict with vsphere-automation-sdk #481 #497
• fixes issue with aiodns #488